Question: Which of the Fungicides that cause Ferbam exposure has the lowest explosive concentration?
Paraphrase: Which fungicide has the lowest explosive concentration causing Ferbam exposure?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q193237 . ?ent wdt:P2204 ?obj . ?ent wdt:P1542 wd:Q21174317. } ORDER BY ASC(?obj)LIMIT 5 
Answer: ferbam